Nightly build 2025.07.03

What's Changed

Toolchain and implementation changes 🛠️

• Refactor ValueStoreChunk and ValueStoreRange into ValueStore by @jonmeow in #5756
• Make ValueStore require a ValueT parameter by @jonmeow in #5757
• Change BlockValueStore to take ElementT as a parameter by @jonmeow in #5758
• Consistently return runtime phase if the operands contain a runtime by @danakj in #5729
• Import vtable_ptr lazily by @dwblaikie in #5762
• Change CanonicalValueStore to take ValueT and KeyT as parameters by @jonmeow in #5759
• Remove IdT from ValueStoreTypes by @jonmeow in #5761
• Ask Clang to mangle names, don't try to do it ourselves. by @zygoloid in #5764

Full Changelog: v0.0.0-0.nightly.2025.07.02...v0.0.0-0.nightly.2025.07.03

Nightly build 2025.07.02

What's Changed

Proposals accepted and merged 📜

• Carbon/C++ Interop: Primitive Types proposal by @ivanaivanovska in #5448

Toolchain and implementation changes 🛠️

• Move dumping into the phase factory functions by @jonmeow in #5747
• Split value store related types to separate files by @jonmeow in #5754
• Add a ValueT to RelationalValueStore by @jonmeow in #5755

Full Changelog: v0.0.0-0.nightly.2025.07.01...v0.0.0-0.nightly.2025.07.02

Nightly build 2025.07.01

What's Changed

Proposals accepted and merged 📜

• Progressive disclosure principle by @geoffromer in #5661

Toolchain and implementation changes 🛠️

• Diagnose partial applied to final types. by @dwblaikie in #5744

Documentation changes 📝

• Fix repeated newlines in expression mermaid by @jonmeow in #5751
• A few more mermaid newline fixes by @jonmeow in #5752
• Add partial to the precedence diagram. by @zygoloid in #5749

Full Changelog: v0.0.0-0.nightly.2025.06.28...v0.0.0-0.nightly.2025.07.01

Nightly build 2025.06.30

What's Changed

Toolchain and implementation changes 🛠️

• Represent vtables as a top level SemIR construct by @dwblaikie in #5472
• Key-type customization in CanonicalValueStore and ClangDecl cleanups by @chandlerc in #5743
• Reimplement destroy as an interface by @jonmeow in #5678
• Use Core.Range from for lowering tests. by @zygoloid in #5746
• Add hashtable benchmark coverage for integers with low zero bits by @chandlerc in #5735
• Switch Destroy to addr self by @jonmeow in #5748

Other changes

• Bump webrick from 1.8.1 to 1.8.2 in /website in the bundler group across 1 directory by @dependabot in #5745

Full Changelog: v0.0.0-0.nightly.2025.06.27...v0.0.0-0.nightly.2025.06.30

Nightly build 2025.06.29

What's Changed

Toolchain and implementation changes 🛠️

• Represent vtables as a top level SemIR construct by @dwblaikie in #5472
• Key-type customization in CanonicalValueStore and ClangDecl cleanups by @chandlerc in #5743
• Reimplement destroy as an interface by @jonmeow in #5678
• Use Core.Range from for lowering tests. by @zygoloid in #5746
• Add hashtable benchmark coverage for integers with low zero bits by @chandlerc in #5735
• Switch Destroy to addr self by @jonmeow in #5748

Other changes

• Bump webrick from 1.8.1 to 1.8.2 in /website in the bundler group across 1 directory by @dependabot in #5745

Full Changelog: v0.0.0-0.nightly.2025.06.27...v0.0.0-0.nightly.2025.06.29

Nightly build 2025.06.28

What's Changed

Toolchain and implementation changes 🛠️

• Represent vtables as a top level SemIR construct by @dwblaikie in #5472
• Key-type customization in CanonicalValueStore and ClangDecl cleanups by @chandlerc in #5743
• Reimplement destroy as an interface by @jonmeow in #5678
• Use Core.Range from for lowering tests. by @zygoloid in #5746
• Add hashtable benchmark coverage for integers with low zero bits by @chandlerc in #5735
• Switch Destroy to addr self by @jonmeow in #5748

Other changes

• Bump webrick from 1.8.1 to 1.8.2 in /website in the bundler group across 1 directory by @dependabot in #5745

Full Changelog: v0.0.0-0.nightly.2025.06.27...v0.0.0-0.nightly.2025.06.28

Nightly build 2025.06.27

What's Changed

Toolchain and implementation changes 🛠️

• Adding additional test for specific coalescing. by @alinas in #5732
• Tolerate incomplete interface when stringifying ImplWitnessAccess by @geoffromer in #5730
• Add a test where impls requires things of another generic type by @danakj in #5713
• Use Decl::getAsFunction() to cast clang_decl to FunctionDecl by @bricknerb in #5737
• Move PrettyStackTraceFunction to common by @jonmeow in #5739
• Add Core.Range(N) facility to construct an integer range. by @zygoloid in #5699
• Print captured stdout/stderr on test crashes by @jonmeow in #5740
• Use LLVM verifier in lowering by @jonmeow in #5733
• Allow repeated includes, particularly for min_prelude by @jonmeow in #5741
• Basic SemIR partial support by @dwblaikie in #5736

Full Changelog: v0.0.0-0.nightly.2025.06.26...v0.0.0-0.nightly.2025.06.27

Nightly build 2025.06.26

What's Changed

Toolchain and implementation changes 🛠️

• Remove the IsPeriodSelf function, use constant value comparison instead by @danakj in #5731
• Propagate errors in import by @danakj in #5728
• Clean up --no-prelude-import uses by @jonmeow in #5722
• Refactor coalescing logic out of the file context. by @alinas in #5723
• Handle insts that resolve to type on the RHS of impls by @danakj in #5712
• Use static allocas for temporaries. by @zygoloid in #5734
• Check and lowering support for for loops. by @zygoloid in #5698

Full Changelog: v0.0.0-0.nightly.2025.06.25...v0.0.0-0.nightly.2025.06.26

Nightly build 2025.06.25

What's Changed

Toolchain and implementation changes 🛠️

• Replace isStruct() || isClass() with !isUnion() by @bricknerb in #5715
• Apply min-preludes to more tests (part 7) by @danakj in #5704
• Move function_ test files to be in function dir and remove the function_ prefix by @bricknerb in #5716
• Clean up and extend support for cross-file lowering of specific functions. by @zygoloid in #5688
• Add tests for accessing an aggregate member constant through an ImplWitnessAccess by @danakj in #5702
• Add a full.carbon min-prelude that pulls in the full production prelude by @danakj in #5703
• Optimize specific function coalescing in lowering. by @alinas in #5684
• Helper to flag unexpected instructions on branches by @jonmeow in #5721

Documentation changes 📝

• Introduce a benchmark running script by @chandlerc in #5706

Full Changelog: v0.0.0-0.nightly.2025.06.24...v0.0.0-0.nightly.2025.06.25

Nightly build 2025.06.24

What's Changed

Toolchain and implementation changes 🛠️

• Apply min-preludes to more tests (part 8) by @danakj in #5705
• Replace EXTRA-ARGS: --no-prelude-import with INCLUDE-FILE: toolchain/testing/testdata/min_prelude/none.carbon by @bricknerb in #5707
• Remove TODOs from the test of a declared but not defined struct as a by value parameter/return value by @bricknerb in #5708
• Support a C++ class as a parameter or return by value, similar to a C++ struct by @bricknerb in #5709
• Apply min-preludes to more tests (part 6) by @danakj in #5691
• Fix tuple patterns matching expressions with atomic tuple form. by @zygoloid in #5697
• Avoid deducing errors as argument instructions after subst by @danakj in #5710

Full Changelog: v0.0.0-0.nightly.2025.06.21...v0.0.0-0.nightly.2025.06.24